<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8" />
  <meta http-equiv="X-UA-Compatible" content="IE=edge" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <link rel="stylesheet" href="./css/inputnumber.css" />
  <link rel="stylesheet" href="./css/index.css" />
  <title>购物车</title>
</head>

<body>
  <div class="app-container" id="app">
    <!-- 顶部banner -->
    <div class="banner-box"><img src="http://autumnfish.cn/static/fruit.jpg" alt="" /></div>
    <!-- 面包屑 -->
    <div class="breadcrumb">
      <span>🏠</span>
      /
      <span>购物车</span>
    </div>
    <!-- 购物车主体 -->
    <div class="main">
      <div class="table">
        <!-- 头部 -->
        <div class="thead">
          <div class="tr">
            <div class="th">选中</div>
            <div class="th th-pic">图片</div>
            <div class="th">单价</div>
            <div class="th num-th">个数</div>
            <div class="th">小计</div>
            <div class="th">操作</div>
          </div>
        </div>
        <!-- 身体 -->
        <div class="tbody">
          <div class="tr" v-for="(el, i) in fruitList" :key="el.id" :class="{active :activeIndex === i}"
            @click="activeIndex = i ">
            <div class="td"><input v-model="el.isChecked" type="checkbox" checked /></div>
            <div class="td"><img :src="el.icon" alt="" /></div>
            <div class="td">{{el.price}}</div>
            <div class="td">
              <div class="my-input-number">
                <button class="decrease" @click="el.num > 1 ? el.num-- : 1"> - </button>
                <span class="my-input__inner">{{el.num}}</span>
                <button class="increase" @click="el.num++"> + </button>
              </div>
            </div>
            <div class="td">{{el.price * el.num}}</div>
            <div class="td"><button @click="fruitList.splice(i,1)">删除</button></div>
          </div>

          <!-- <div class="tr">
              <div class="td"><input type="checkbox"/></div>
              <div class="td"><img src="http://autumnfish.cn/static/荔枝.png" alt="" /></div>
              <div class="td">7</div>
              <div class="td">
                <div class="my-input-number">
                  <button disabled class="decrease"> - </button>
                  <span class="my-input__inner">1</span>
                  <button class="increase"> + </button>
                </div>
              </div>
              <div class="td">14</div>
              <div class="td"><button>删除</button></div>
            </div> -->
          </div>
        </div>
          <!-- 底部 -->
          <div class="bottom">
            <!-- 全选 -->
            <label class="check-all">
              <input v-model="isAll" type="checkbox" />
              全选
            </label>
            <div class="right-box">
              <!-- 所有商品总价 -->
              <span class="price-box">总价&nbsp;&nbsp;:&nbsp;&nbsp;¥&nbsp;<span class="price">{{total}}</span></span>
              <!-- 结算按钮 -->
              <button class="pay">结算( {{num}} )</button>
            </div>
          </div>
        </div>
        <!-- 空车 -->
        <div class="empty">🛒空空如也</div>
      </div>
      <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
      <script>
        const app = new Vue({
          el: '#app',
          data: {
            activeIndex: 0,
            // 水果列表
            fruitList: [
              {
                id: 1,
                icon: 'http://autumnfish.cn/static/火龙果.png',
                isChecked: true,
                num: 2,
                price: 6,
              },
              {
                id: 2,
                icon: 'http://autumnfish.cn/static/荔枝.png',
                isChecked: false,
                num: 7,
                price: 20,
              },
              {
                id: 3,
                icon: 'http://autumnfish.cn/static/榴莲.png',
                isChecked: false,
                num: 3,
                price: 40,
              },
              {
                id: 4,
                icon: 'http://autumnfish.cn/static/鸭梨.png',
                isChecked: true,
                num: 10,
                price: 3,
              },
              {
                id: 5,
                icon: 'http://autumnfish.cn/static/樱桃.png',
                isChecked: false,
                num: 20,
                price: 34,
              },
            ],
          },
          computed: {
            total() {
             return this.fruitList.filter(el => el.isChecked === true).reduce((pre,cur) =>pre + cur.num * cur.price,0)
            
            
            },
            num() {
              return this.fruitList.filter(el => el.isChecked === true).reduce((pre, cur) => pre + cur.num, 0)
            },
            isAll: {
              set(val) {
                this.fruitList.forEach(el => {
                  return el.isChecked = val
                })
              },
              get() {
                return this.fruitList.every(el => {
                  return el.isChecked
                })
              }
            }
          },
          methods: {

          },
        })
      </script>
</body>

</html>